First Side This phenomenon is called opposition surge. Mount Umbriel, a mountain on Alexander Island, Antarctica. The left flank collapsed, and the zombies threw themselves on the city wall, building ladders with their bodies. [8] No other spacecraft has ever visited Uranus (and Umbriel), and no mission to Uranus and its moons are planned. Titus Mede IGeneral TakarCommander Prossos Mars, Venus and Neptune put on a summer skywatching show tonight. The latter two moons are a more challenging observational target due to their proximity to the bright glow of Uranus. Fellow English astronomer William Herschel, who had discovered Uranus'. In total, Uranus has 27 known natural satellites and along with Ariel and Umbriel, Miranda, Titania, and Oberon belong to the five main satellites. Combatants They made a bargain with the prince to allow them to defeat Umbra and return him the power he had stolen from him. Some polygons correspond to depressions of a few kilometers deep and may have been created during an early episode of tectonic activity. From 1870 to 1872 he was the president of the Royal Astronomical Society. Umbriel was discovered on October 24, 1851 by William Lassell. Umbriel. He was elected a fellow of the Royal Society of London in 1849 and was president of the Royal Astronomical Society from 1870 to 1872. Umbriel [UM-bree-ul] is the darkest satellite of Uranus. Follow him on Twitter @sciencef1rst. William Lassell was born in Bolton, Lancashire, UK, and educated in Rochdale Academy. The Voyager 2 probe has been the only object to study Umbriel up close, and took several pictures that allowed mapping of roughly 40% of its surface. It shows the least geological activity. The next two moons of Uranus to be discovered, Ariel and Umbriel, were spotted by English astronomer William Lassell in 1851. The An-Xileel allowed him to perfom the ritual as long as Umbriel only killed non-Argonians and Lukiul (the assimilated). Azura warned him about Umbriel and hinted him to find Attrebus, so that he could avenge Ilzeheven. Once every 42 years, when Uranus has an equinox and its equatorial plane intersects the Earth, mutual occultations of Uranus's moons become possible. [30] The precise composition of the subnebula is not known; however, the higher density of Uranian moons compared to the moons of Saturn indicates that it may have been relatively water-poor.Template:Efn[8] Significant amounts of nitrogen and carbon may have been present in the form of carbon monoxide (CO) and molecular nitrogen (N2) instead of ammonia and methane. With this telescope, the first of its size to be set in an equatorial mounting, he discovered Triton on Oct. 10, 1846, only 17 days after Neptune itself had been discovered. How was it discovered? Omissions? [9] The cause of this asymmetry is not known, but it may be related to the bombardment by charged particles from the magnetosphere of Uranus, which is stronger on the trailing hemisphere (due to the plasma's co-rotation). Uranus and its moons and rings as seen by Hubble on July 28, 1997. William Lassell, (born June 18, 1799, Bolton, Lancashire, Eng.died Oct. 5, 1880, Maidenhead, Berkshire), amateur English astronomer who discovered Ariel and Umbriel, satellites of Uranus; and Triton, a satellite of Neptune. It was also where Umbriel would arrive, if it continued on the course it was presently following. [9] This is important, because the trailing hemispheres of airless satellites orbiting inside a magnetosphere (like Umbriel) are struck by magnetospheric plasma, which co-rotates with the planet. Corrections? The irregular moons have retrograde orbits, while the others are prograde (i.e., they orbit in the same direction as Uranus). It is about the same size as Ariel and has about the same density. Umbriel is the third largest and fourth most massive of Uranian moons.Template:Efn The moon's density is 1.39g/cm3,[17] which indicates that it mainly consists of water ice, with a dense non-ice component constituting around 40% of its mass. Colin recovered from the stab and stopped Arese from performing the ritual. [2], Umbriel orbits Uranus at the distance of about 266,000 km (Template:Convert/round mi), being the third farthest from the planet among its five major moons.Template:Efn Umbriel's orbit has a small eccentricity and is inclined very little relative to the equator of Uranus. Casualties Herschel had discovered Uranus itself six years earlier in March 1781. Much like other moons of Uranus, the surface of Umbriel is cut by a system of canyons trending northeastsouthwest. Umbriel is the fourth largest and third most distant of Uranus' five large moons. Space is part of Future US Inc, an international media group and leading digital publisher. A layer of liquid water (ocean) rich in dissolved ammonia may have formed at the coremantle boundary. [8][26] Study of limb profiles of Umbriel revealed a possible very large impact feature having the diameter of about 400km and depth of approximately 5km. Here's how to see it. The space age exploded onto the world in. [9] Umbriel also serves as a sink of the magnetospheric charged particles, which creates a pronounced dip in energetic particle count near the moon's orbit as observed by Voyager 2 in 1986. Posted on June 12, 2021 June 12, 2021 by Andy Tomaswick. National Aeronautics and Space Administration Wiki is a FANDOM Lifestyle Community. Ariel is named after the leading sylph in The Rape of the Lock. All Rights Reserved. The names of all four satellites of Uranus then known were suggested by John Herschel in 1852 at the request of Lassell. Updates? After Miranda escaped from this resonance (through a mechanism that probably resulted in its anomalously high orbital inclination), its eccentricity would have been damped, turning off the heat source.[15][16]. While the composition of the inner Uranian moons is roughly half ice, and half rock, the composition of the smaller outer moons is mostly unknown. Umbriel. As well as being a similar size to its celestial "wife" Titania, Oberon has a similar half-ice/half-rock composition. With the advent of the dwarf planet, Uranus now sits as the second furthest planet from the Sun. He launched an attack on Umbriel, half of the legion suddenly left the ground, along with the engines, and flew toward the city. After the end of formation, the subsurface layer cooled, while the interior of Umbriel heated due to decay of radioactive elements present in its rocks. However, the color asymmetry of Umbriel is likely caused by accretion of a reddish material coming from outer parts of the Uranian system, possibly, from irregular satellites, which would occur predominately on the leading hemisphere. [9], Except for water, the only other compound identified on the surface of Umbriel by the infrared spectroscopy is carbon dioxide, which is concentrated mainly on the trailing hemisphere. The satellite was discovered by William Lassell on October 24, 1851. Between Cordelia and Ophelia and Miranda are at least eight small satellites which make this region extremely crowded. Titania is the largest moon of Uranus, with a diameter of around 1,000 miles (1,609 km), which still makes it under half as wide as Earth's moon which has a diameter of around 2,200 miles (3,500 km). While every effort has been made to follow citation style rules, there may be some discrepancies. [8] The presence of water ice is supported by infrared spectroscopic observations, which have revealed crystalline water ice on the surface of the moon. These moons were Juliet, Puck, Cordelia, Ophelia, Bianca, Desdemona, Portia, Rosalind, Cressida, and Belinda. This is where having a dedicated mission to investigate Uranus and its moons would be a game changer. Attrebus Mede was a hero to the people. Montage of Uranus five largest satellites. Umbriel was discovered on Oct. 24, 1851 by English astronomer William Lassell. Future US, Inc. Full 7th Floor, 130 West 42nd Street, The next Uranus moon was not discovered until almost a century later when Dutch astronomer Gerard Kuiper found the fifth moon, Miranda, in 1948. They were aided by the F'aashe clan, who sacrificed so that Sul and Attrebus could escape from Hircine. [29] Currently there is no explanation for why Umbriel is so dark and uniform in appearance. The first moons to be discovered were in 1787 by William Herschel, and would not receive names for nearly a hundred years. Imperial LegionPenitus Oculatus Umbriel has a very low Bond albedo of only about 10% as compared to 23% for Ariel. It was discovered at the same time as Ariel and named after a character in Alexander Pope's poem The Rape of the Lock. [29] The polygons were identified from precise photometry of Voyager 2's images and are distributed more or less uniformly on the surface of Umbriel, trending northeastsouthwest. The moons of Uranus also have unique names in the solar system, Whereas the normal naming convention is for celestial objects to share monikers with mythical figures, instead, most of Uranus' moons are named are characters created by William Shakespeare, with only a couple taking their names from the works of Alexander Pope. In exchange, Vile demanded a soul, but Attrebus refused to the additional requirement. Umbriel was named after a spirit in Alexander Popes The Rape of Lock. The figure comes from N.A.S.A.. Umbriel' equatorial radius is 585km. At the time of the flyby the southern hemisphere of Umbriel (like those of the other moons) was pointed towards the Sun, so the northern (dark) hemisphere could not be studied. [31] The maximum temperature of around 180K was reached at the depth of about 3km. On October 24, 1851, English merchant and astronomer William Lassell discovered Ariel and Umbriel, two moons of planet Uranus. The moon is also designated UranusII. Gerard Gilligan,William Lassell Telescopes, Planets, and Drinking Beer, [14], Your email address will not be published. The most prominent surface feature is a ring of bright material on the floor of Wunda crater. Sul deduced that the Dunmer who had taken Umbra must be in Solstheim. The impacts that accompanied accretion caused heating of the moon's outer layer. They convinced Malacath to send them to Solstheim. The Voyager 2 flyby coincided with the southern hemisphere's 1986 summer solstice, when nearly the entire northern hemisphere was unilluminated. Both Ariel and the slightly larger Uranian satellite Umbriel were discovered by William Lassell on 24 October 1851. [22] Nearby, seen along the terminator, are the craters Vuver and Skynd, which lack bright rims but possess bright central peaks. The cause of this asymmetry is not known, but it may be related to the bombardment by charged particles from the magnetosphere of Uranus, which is stronger on the trailing hemisphere (due to the plasma's co-rotation). Titus had already received reports about the flying city, but according to the reports, in was heading to Morrowind. Umbriel's accretion probably lasted for several thousand years. Wunda is assumed to be a crater, but nobody is sure what it is exactly. Vuhon and Umbra merged into one being who could control Umbriel at their will. It is also the eighth most massive moon in the solar system. He also writes about science communication for Elsevier and the European Journal of Physics. Near the top is a puzzling bright ring called the fluorescent cheerio. (Image credit: SCIENCE: NASA, ESA, CSA, STScI IMAGE PROCESSING: Joseph DePasquale (STScI)). They are small and hard to detect, so in principle, there is no reason to believe that we discovered all of them. [edit | edit source] Umbriel was discovered on October 24, 1851 by William Lassell. The approached the Imperial City by boat. Magnetosphere: What Planets Have Magnetic Fields and How Do They Differ? Umbriel orbits Uranus at the distance of about 266,000km (165,000mi), being the third farthest from the planet among its five major moons. Arese stabbed Colin with her knife and she headed to a room that was in the very axis of the White-Gold Tower. The 4 main moons of Uranus have radii between 500 and 800 km. The mass of the Uranian satellite system is mostly concentrated in the largest five members with prograde and nearly circular orbits: Miranda, Ariel, Umbriel, Titania, and Oberon, from the closest to farthest. Criminals were used to power the Ingenium, but eventually, a Vuhon discovered that appropriate souls could power it for months. One of Uranus' most interesting features is its ring system and the ice giant's moons play an important role in shaping these rings. The seventh planet from the sun and the coldest planet in the solar system, Uranus has 27 known moons. The orbit is inclined a little relative to the equator of Uranus. These bodies are extraordinary in the solar system because they share the axial tilt of 98 degrees possessed by their parent planet. She eventually was promoted to chef, even preparing a meal for Lord Umbriel himself.[3]. William Lassell - Early Years William Lassell was born in Bolton, Lancashire, UK, and educated in Rochdale Academy. . These instruments have spotted moons that were too small and dark even for Voyager 2 to see on its flyby mission and have raised the total of known Uranian moons to 27. Another mystery surrounding this dark moon takes the form of a bright ring about 90 miles (140 km) in diameter on its surface. It has a standoff distance of 265,970 km. He encountered Ilzheven's ghost, who warned him that a Dunmer who wore a signet ring with a draugr had already taken the sword. In 20072008 a number of such events were observed including two occultations of Titania by Umbriel on August 15 and December 8, 2007 as well as of Ariel by Umbriel on August 19, 2007. [8], Near Umbriel's equator lies the most prominent surface feature: Wunda crater, which has a diameter of about 131km. [7] The names of all four satellites of Uranus then known were suggested by John Herschel[6] in 1852 at the request of Lassell. Voyager found an old surface with unusually large craters, and determined Umbriel 's composition to be about half ice and half rock. Lassell discovered Ariel and Umbriel in 185152 while at Malta, and there in 1861 he erected a 48-inch reflector, which he used to observe and catalog hundreds of new nebulae. Sul managed to get away from Umbra, he wandered through the different realms of Oblivion trying to return to Tamriel. The Planet Explored. The images cover about 40% of the surface, but only 20% was photographed with the quality required for geological mapping. All of Uranus's moons are named after characters created by William Shakespeare or Alexander Pope. The reddening of the surfaces probably results from space weathering from bombardment by charged particles and micrometeorites over the age of the Solar System. Both northern and southern poles spend 42 years in complete darkness, and another 42 years in continuous sunlight, with the Sun rising close to the zenith over one of the poles at each solstice. [18] Among Uranian moons Umbriel was least subjected to endogenic resurfacing processes,[22] although it may like other Uranian moons have experienced a very early resurfacing event.[29]. In 1849 he was elected an Honorary Fellow of the Royal Society of Edinburgh. [22] The only signs of the ancient internal activity are canyons and dark polygonsdark patches with complex shapes measuring from tens to hundreds of kilometers across. [6], Once in Vivec City, Sul searched for Umbra. The cooling near-surface layer contracted, while the interior expanded. This phenomenon is called opposition surge. At first, it consumed as much as ten souls per day. Other Uranian moons are much brighter. Uranus has 27 detected satellites. Alternatively, Umbriel's crust may be entirely composed of the dark material, which prevented formation of bright features like crater rays. The most unique feature is that the regular moons are tilted together with Uranus. Like most other moons, including the Earths moon, Umbriel is tidally locked with the planet that it orbits. It was discovered at the same time as Ariel and named after a character in Alexander Pope's poem The Rape of the Lock. First and foremost, Umbriel is dark. The only close-up images we have of Umbriel's surface come from Voyager 2's flyby in January 1986. In other words, Umbriel is a synchronous or tidally locked satellite, with one face always pointing toward its parent planet. For instance, in Sept. 2020, British astronomer Paul Leyland was able to catch an image of the small moon Sycorax, which has a diameter of about 93 miles (150 km). The next largest moon of Uranus is Oberon, which takes its name from the king of the fairies in Shakespeare's "A Midsummer Night's Dream." This indicates that the moons of Uranus formed after a massive collision, possibly with an Earth-sized planet, that knocked the ice giant on its side. Read about it here in these resources from NASA. Overview Umbriel is the darkest of Uranus' largest moons. 02:43 Umbriel Crisis Date 4E 48 Place Black Marsh, Morrowind and Cyrodiil Outcome Empire Victory Clavicus Vile recovers Umbra and the power he lost Umbriel is guided to the Realm of the Hist First Side Combatants Commanders Tamrielic Empire Penitus Oculatus The Synod The College of Whispers Titus Mede I General Takar Commander Prossos Strength Umbriel's orbit has a small eccentricity and is inclined very little relative to the equator of Uranus. In other words, Umbriel is a synchronous or tidally locked satellite, with one face always pointing toward its parent planet. Colin and Letine Arese, an agent of the Emperor who had worked in Hierem's ministry for ten years and gained his trust, broke in Hierem's chambers. The surface is the darkest among Uranian moons, and appears to have been shaped primarily by impacts. This caused strong extensional stresses in the moon's crust, which may have led to cracking. The observed crater diameters range from a few kilometers at the low end to 210kilometers for the largest known crater, Wokolo. Attrebus and Sul waited for him in the sigil he used to teleport. It has a radius of 584.7 km, a surface area of 4,296,000 sq. More National Aeronautics and Space Administration Wiki, National Aeronautics and Space Administration Wiki, http://solarsystem.nasa.gov/planets/profile.cfm?Object=Ura_Umbriel, Do Not Sell or Share My Personal Information. The most accepted theory for the formation of these moons that are titled together with Uranus (which is titled by around 98 degrees), is that they formed as a result of a giant impact that tilted Uranus, and formed a disk around the young planet from which the regular moons formed. Umbriel also serves as a sink of the magnetospheric charged particles, which creates a pronounced dip in energetic particle count near the moon's orbit as observed by Voyager 2 in 1986. One of the only survivors of the massacre were Annag Honart and Mere-Glim. Clavicus demanded them to return him his sword. [21], Scientists have so far recognized only one class of geological feature on Umbrielcraters. It reflects only 16 percent of the light that strikes its surface, a feature similar to the highland areas of Earth's Moon. The origin of the carbon dioxide is not completely clear. Template:Infobox planet. The names of all four satellites of Uranus then known were suggested by John Herschel in 1852 at the request of Lassell. Elder Scrolls is a FANDOM Games Community. Significant amounts of nitrogen and carbon may have been present in the form of carbon monoxide (CO) and molecular nitrogen (N2) instead of ammonia and methane. In addition to featuring the planet's ring system, some including the faintest rings Nu, and Mu which haven't been seen since Voyager 2 visited the Uranian system in 1986, the image featured the largest five moons of Uranus and also Puck, which has a diameter of around 90 miles (150 km). [9] The Voyager 2 flyby coincided with the southern hemisphere's 1986 summer solstice, when nearly the entire northern hemisphere was unilluminated. Besides, he also discovered the Neptune moon Triton and the Saturn moon Hyperion. Place The escape of CO2 from the interior may be a result of past geological activity on this moon. Template:Moons of Uranus [27], Much like other moons of Uranus, the surface of Umbriel is cut by a system of canyons trending northeastsouthwest. Umbriel is ancient, and the darkest of the five large moons. The latter could be made of rock and carbonaceous material including heavy organic compounds known as tholins. Profile of Umbriel Umbriel was discovered on October 24th, 1851 by English Astronomer William Lassell who discovered Umbriel at the same time as he discovered another moon named Ariel. Ariel appears to have a surface that is the youngest of the moons of Uranus. Lord Umbriel / VuhonHierem The only signs of the ancient internal activity are canyons and dark polygonsdark patches with complex shapes measuring from tens to hundreds of kilometers across. [8], Umbriel is thought to have formed from an accretion disc or subnebula; a disc of gas and dust that either existed around Uranus for some time after its formation or was created by the giant impact that most likely gave Uranus its large obliquity. They were captured by Hirem's agents. The observed crater diameters range from a few kilometers at the low end to 210kilometers for the largest known crater, Wokolo. The next Uranus moon was not discovered until almost a century. The first moons of Uranus to be discovered, Oberon and Titania, were found by German-born astronomer William Herschel in 1787. [8], Umbriel's accretion probably lasted for several thousand years. Happy Asteroid Day! Umbriel is made mostly of water ice, followed by silicate rock and methane ice. Scientists believe that this could be the result of frost deposits gathering around an impact crater. [22] In fact, among the Uranian moons only Oberon has more impact craters than Umbriel. Both Umbriels northern and southern poles go through 42 years of darkness and 42 years of light. His telescope was presented to the Royal Observatory in Greenwich. Attrebus did not pay attention to his father, so he secretly prepared his men for an expedition. He opened a door to Malacath's realm, and Attrebus and him escaped from the flying city.[7]. Annag gained the trust of the Umbrielians and worked in the kitchens of Umbriel in order to keep Prince Attrebus informed about anything she could discover about Umbriel. Umbriel, the third nearest of Uranus's five major moons, in an image made by Voyager 2 on Jan. 24, 1986. Its surface may be covered by a relatively thin layer of dark material (so called umbral material) excavated by an impact or expelled in an explosive volcanic eruption. Attrebus gave credit of the victory to The Synod and The College of Whispers, who had cooperated to stop Umbriel, in order to start their reconciliation and have their political support now that Hierem was dead. Umbriel Crisis The orbital period, i.e. Umbriel consists mainly of ice with a substantial fraction of rock, and may be differentiated into a rocky core and an icy . The moon is also designated UranusII. Comets or Asteroids or What? The zombies headed to the Imperial City. He went mad as soon as he touched the blade, so his father had to lock him up in the depths of their castle. The Fluorescent Cheerio As with all of Uranus' moons, Umbriel is believed to be composed of about 50% water ice and 50% rocky material. Around 1854 the observatory was moved to Bradstone. In 1846, Lassell discovered Triton, the largest moon of Neptune, just 17 days after the discovery of Neptune itself by German astronomer Johann Gottfried Galle, using his self-built instrument. The most distant of the two bright satellites discovered in 1787 by Sir W. Herschel is denominated Oberon, the other Titania, and pursuing still the order of distance, the interior ones now discovered are named Umbriel and Ariel. Since Umbra couldn't leave Vile's realm, Vuhon managed to wrap Umbriel, Umbra's city, in a Oblivion bubble. These are with their discoverer and year of discovery according to NASA's official catalog: We asked Ravit Helled, a planetary scientist specializing in planet formation, planet interiors, planetary evolution, and solar system physics a few commonly asked questions about the moons of Uranus. All of the regular moons show impact craters and tectonic features such as canyons and cliffs. You can see a huge sunspot 7 times wider than Earth right now but be careful! Quite how the surface of Umbriel became so dark is a mystery. This caused strong extensional stresses in the moon's crust, which may have led to cracking. Strength Covered by numerous impact craters reaching 210km (130mi) in diameter, Umbriel is the second most heavily cratered satellite of Uranus after Oberon. It is probably the floor of a crater. The energetic particles tend to sputter water ice, decompose methane trapped in ice as clathrate hydrate and darken other organics, leaving a dark, carbon-rich residue behind. The value is the radius in km of the said object at the Equator. She had discovered that Hierem intended to become a god draining the power of the tower and using the power of the souls in Umbriel. Glim lead Umbriel into the Realm of the Hist. In exchange, Hierem could overthrow Emperor Titus Mede I and become the new emperor. Coverage is incomplete for Miranda and Ariel; gray circles depict missing areas. [5] Sul rescued Attrebus from Radhasa. Cheydinhal was sieged by the zombies, but the city guard and the legionaries that had withdrawn to the city opened a gap in the enemy line so that the citizens could evacuate.[9]. The heat source for the planets comes from tidal interactions with the planet (like with the regular moons of Jupiter and Saturn) which probably played a key role in the evolution of the Uranian satellite system. the mid 20th century, and we finally were able to get a better look at the moons of Uranus. This hypothesis would explain the asymmetry in its distribution, as the trailing hemisphere is subject to a more intense magnetospheric influence than the leading hemisphere. Umbriel is the "dusky melancholy sprite" in Alexander Pope's The Rape of the Lock, and the name suggests the Latin umbra, meaning shadow. Umbriel is a moon of Uranus discovered on October 24, 1851, by William Lassell.It was discovered at the same time as Ariel and named after a character in Alexander Pope 's poem The Rape of the Lock.Umbriel consists mainly of ice with a substantial fraction of rock, and may be differentiated into a rocky core and an icy mantle.The surface is the darkest among Uranian . Besides, he also discovered the Neptune moon Triton and the Saturn moon Hyperion. General Takar lead the last attempt to stop Umbriel from attacking the Imperial City. [9], Umbriel may be differentiated into a rocky core surrounded by an icy mantle. The outer solar system is ruled by the ice giants Uranus and its twin planet Neptune. Our editors will review what youve submitted and determine whether to revise the article. The composition of the moons beyond Oberon's orbit is unknown, but they are likely captured asteroids, so probably rocky in composition, but possibly also ice and other elements. The polygons were identified from precise photometry of Voyager 2's images and are distributed more or less uniformly on the surface of Umbriel, trending northeastsouthwest. [8] Umbriel's orbit lies completely inside the Uranian magnetosphere. Just then, Clavicus Vile possessed Attrebus, Vile demanded a soul for their bargain. The Ingenium needed souls to be powered. It might be produced locally from carbonates or organic materials under the influence of the energetic charged particles coming from the magnetosphere of Uranus or the solar ultraviolet radiation. Ilzheven's man, Sul, thought that Vuhon had selected her because she loved him instead of Vuhon. [21] However, the color asymmetry of Umbriel is likely caused by accretion of a reddish material coming from outer parts of the Uranian system, possibly, from irregular satellites, which would occur predominately on the leading hemisphere. It was discovered at the same time as Ariel and named after a character in Alexander Pope's poem The Rape of the Lock. 4E 48 Umbriel is a moon of Uranus discovered on October 24, 1851, by William Lassell. An alternative explanation for the tilt of Uranus, the third largest planet in the solar system after Jupiter and Saturn, published in 2022, suggests it might be the result of a now-lost moon, that has wandered away from the ice giant. The two biggest ones, Titania and Oberon, were discovered by Herschel in 1787 and are named after character's in Shakespeare's "Midsummer Night's Dream." The next two are Ariel and Umbriel, discovered by William Lassell in 1851 and given names from Alexander Pope's "Rape of the Lock". Oberon is distinct from Titania and the other large moons of Uranus because its surface is much more heavily cratered than the surfaces of the other Uranian moons. With the advent of the dwarf planet, Uranus now sits as the second furthest planet from the Sun. The surface of Umbriel has far more and larger craters than do Ariel and Titania. They discovered that the man who recovered Umbra was Elhul Sathil.
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